Monday's After-Hours Movers Led By Trevena, Petrobras, Matrix Service Co & Sunedison

Shares of Trevena Inc TRVN are up more than 32 percent on Monday’s after-hours trading, after the company announced positive results from its Phase 2b study of TRV130 in Acute Postoperative Pain.

Neil Singla, M.D., chief scientific officer of Lotus Clinical Research and lead investigator of the clinical study assured that the trial showed that TRV130 was statistically effective to treat pain after an abdominoplasty surgery -- or “tummy tuck,” matching morphine efficacy, “with a markedly improved safety and tolerability profile.”

“The challenges of safely and adequately titrating morphine are well recognized, and these data suggest that, if approved, TRV130 may provide a better option than currently available opioid analgesics,” he added.

Also on the rise is Matrix Service Co MTRX, which reported quarterly earnings of $0.40 per share on revenue of $370.54 million, beating estimates and guidance on the earnings front, but falling short of them in the revenue front. Shares are up more than 6 percent in after-hours trading.

On the other hand, shares of Petroleo Brasileiro Petrobras SA (ADR) PBR are down almost 8 percent since the bell rang, as several media outlets have informed that Judge Sérgio Moro, who is investigating the corruption scandal at the Brazilian company, said there is evidence of “systemic corruption.” Although the evidence still needs to be investigated, the stock is selling off as investors concerns mount.

Finally, there’s Sunedison Inc SUNE, up about 5 percent since the market closed. The spike seems to have been triggered by the disclosure of an increase in the stake of Steven Cohen's Point72 Asset Management to 5.1 percent of the company’s outstanding stock.